@inbook {1774,
	title = {Item calibration and parameter drift},
	year = {2000},
	address = {W. J. van der linden and C. A. W. Glas (Eds.). Computerized adaptive testing: Theory and practice (pp.183-199). Norwell MA: Kluwer Academic.},
	author = {Glas, C. A. W.}
}
